A supporter of opposition presidential candidate Henrique Capriles hurls stones at supporters of Venezuela's President Hugo Chavez, not seen, who were hurling stones back, before an opposition campaign event started at the International airport in Puerto Cabello, Venezuela, Wednesday, Sept. 12, 2012. Tensions have sporadically erupted into violent clashes and scuffles between supporters of the two candidates ahead of the Oct. 7 presidential vote. (AP Photo/Ariana Cubillos)
